fix: file executable permissions check error on macos in docker conta…

…iner

 On macOS Sonoma v14.5, it was discovered that when using avocado in a Docker container to run scripts without execute permissions, they are considered to have executable permissions.

By directly reading the file's permission bits, the `stat` method can provide more accurate permission check results, especially in cases where user context and file system characteristics might affect the behavior of `os.access`. This method is closer to the underlying implementation of the file system, thus providing consistent results across different environments (such as inside and outside Docker containers). After entering the container using `docker exec -it container bash`, use the `stat` command to check the file permission bits.

 Reference: #5945
Signed-off-by:  Kui Li <[email protected]>

avocado/core/resolver.py

@@ -18,6 +18,7 @@
 
 import glob
 import os
+import stat
 from enum import Enum
 
 from avocado.core.enabled_extension_manager import EnabledExtensionManager
@@ -196,7 +197,16 @@ def check_file(
             info=f'File "{path}" does not exist or is not a {type_name}',
         )
 
-    if not os.access(path, access_check):
+    st = os.stat(path)
+    access_flags = 0
+    if access_check & os.R_OK:
+        access_flags |= (stat.S_IRUSR | stat.S_IRGRP | stat.S_IROTH)
+    if access_check & os.W_OK:
+        access_flags |= (stat.S_IWUSR | stat.S_IWGRP | stat.S_IWOTH)
+    if access_check & os.X_OK:
+        access_flags |= (stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH)
+
+    if not bool(st.st_mode & access_flags):
         return ReferenceResolution(
             reference,
             ReferenceResolutionResult.NOTFOUND,